I haven't been at my new job long and already i don't know how long I can be there. I go home after…

I haven't been at my new job long and already i don't know how long I can be there. I go home after each time I work and I'm in pain. it seems to only be my left side. the left bottom side of my back to my whole hip bone down to my knee and my crotch bone is throbbing And partially numb. i think my back is out too. I'm only 30 weeks. I might take a personal day off from work. ughh this sucks.